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Recent content by nksunmoon

  1. N

    problem about high voltage switch

    if I want to transfer a voltage ranging from 0V to 50V, how should I do?
  2. N

    problem about high voltage switch

    here is the problem: I want to use MOSFETs to transfer a voltage ranging from 0V to 80V like a switch. The MOSFETs provided by the PDK can endure 80V Vds at most, but can only endure 5V Vgs at most. The threshold is about 1.2V. So, how can I use the MOSFETs like this to form a switch to transfer...
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    problems about CMFB of a full-differential two-stage OPA

    Hi guys, I want to design a full-differential two-stage OPA. The first stage is telescope cascode structure and the second on is usual common source structure. I want to use switched-capacitor CMFB to make the output common-mode voltage stable. I am wondering now that how many SC-CMFBs I should...
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    Problem about dicing, asking for suggestion!

    I am worring about the ture scribe & break process.
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    Problem about dicing, asking for suggestion!

    I want to scribe dies whoes size are 30mm*6mm from the wafer. Now I am worring whether the size of my dies is too large and there will be some cracks on the dies when dicing the chip. The wafer size is 8 inch. Is there anyone who has some experience about this, please give me some advice. Thank...
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    A problem with MMSIM7.2

    thank you for your attention. the problem i had solved already, i added some environment variables in the shell.
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    A problem with MMSIM7.2

    I have installed the MMSIM7.2 and attached it to the ic5141 envirment recently. But i find that i can't see the transient simulation results when the results file size is larger than 2GB. Is there anyone who has also encountered the same problem,and how can i solve it? Thank you very much!
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    how to connect mmsim7.2 to ic5141?

    i see, thank you very much
  9. N

    how to connect mmsim7.2 to ic5141?

    anyone can tell me how to install mmsim7.2 and how to connect it to ic5141? Thanks very much!
  10. N

    does anyone have a good idea to amplify an analog signal by 32 times

    Yes you are right,now i will give some specifications about the founction of the circuit. The circuit is based on switch capacitor topology,so the gain of the circuit is capacitor dependent. The input signal is very small,and it will be about several millivolts. The load capacitance of the...
  11. N

    does anyone have a good idea to amplify an analog signal by 32 times

    not opa but a kind of circuit
  12. N

    does anyone have a good idea to amplify an analog signal by 32 times

    I want to design a circuit which can amplify an analog singal by 32 times precisely.Does someone have some advices? Thank you very much.
  13. N

    Is there anybody who had ever taped out chip which size was larger than 3cm*1cm?

    yeah, Maybe I should contact to the fab and ask how much the chip will cost
  14. N

    Is there anybody who had ever taped out chip which size was larger than 3cm*1cm?

    I also have heard that there is some restrictions when prducing the mask.Thank you for your advice
  15. N

    Is there anybody who had ever taped out chip which size was larger than 3cm*1cm?

    Is there anybody who had ever taped out chip which size was larger than 3cm*1cm? I don't know is there any restriction to tape out so large chip.Is there anyone who has the experience?
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